SPARK PLUGS

[Rick Allen]

I know Champion J-12Y spark plugs are still around but are they a good choice for my newly rebuilt R2 with factory ignition or a more modern replacement plug is better?  Also, I haven't decided yet but I may go to a HEI distributor and coil so then what would be the plug of choice for that ignition system?,,,

[billsr2]

Someone is bound to extol the virtues of Autolite but I have older Champs on the shelf. Newer Champs do NOT have the same reputation.

Edited October 8, 2023 by billsr2

[Gunslinger]

NGK plugs are the choice of many.  I don't believe any of the old line American named spark plugs are anything more than a name today slapped on whatever is being churned out.  

[Rick Allen]

1 hour ago, Gunslinger said:

NGK plugs are the choice of many.  I don't believe any of the old line American named spark plugs are anything more than a name today slapped on whatever is being churned out.  

Thanks, do you know the interchange # for an NGK plug?,,,

[Rick Allen]

1 hour ago, billsr2 said:

Someone is bound to extol the virtues of Autolite but I have older Champs on the shelf. Newer Champs do NOT have the same reputation.

Yes, I agree, some sellers on e-bay have the older Champs listed, they show them and they have the old style packaging,,,

[Gunslinger]

J-12Y crosses to NGK XR4 which is their equivalent.